<!DOCTYPE html>
<!--引入Template命名空间-->
<html lang="en" xmlns:th="http//www.thymeleaf.org">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<div>Hello World</div>
    <form action="/account/login" method="post">
        用户名:<input type="text" name="username"><br>
        密码:<input type="password" name="password"><br>
<!--        直接获取后端传入值-->
        <p th:text="${msg}"></p>
        <input type="submit" value="登录">
    </form>
</body>
</html>